Threading attachment for shuttles.



W. J. ROBERTS. THREADING ATTACHMENT FOR SHUTTLES.

APPLiCATlON FILED 0CT.25, l9l5- Patented Oct. 3, 1916.

zyzzzmvz 0220267 29 WILLIAM J. ROBERTS, OF PA'WTUCKET, RHODE ISLAND.

THREADING ATTACHMENT FOR SHUTTLES.

Specification of Letters ZPatent.

Patented Get. 3, 1916.

Application filed October 25, 1915. Serial No. 57,856.

To all whom it may concern:

Be it known that I, WILLIAM J. RonERTs, a citizen of the United States, residing at Pawtucket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Threading Attachments for Shuttles; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to loom shuttles, and more particularly to hand threading attachments therefor.

The primary object of the invention is to provide a device of this character which will be simple in construction and efficient in operation, and by the use of which a shuttle may be threaded without the necessity of employing any instrument or using the mouth for sucking the thread through.

Another object of the invention is to pr0- vide a threading device in which an eye and a carriage or guide are employed and so arranged that after the thread is guided into the eye of the guide, it will have no further contact with the guide. H

Another object is to provide a thread guide or carriage so constructed that it will perform the double function of a holder for securing the eye in operative position, and as a guide for directing the thread into said e e.

Another object is to provide a guide of this character formed of a single sheet of metal and so constructed that both it and the eye with which it is designed to cooperate, may be secured in operative position by a single fastening element.

With these and other objects in view, the invention consists of certain novel features of construction, and the combination and arrangement of parts to be hereinafter more particularly described and.claimed.

In the accompanying drawing: Figure 1 is a plan view of a portion of ash-uttle equipped with this improved threader; Fig.

2 is a side elevation thereof; Fig, 3 isa section taken on the line 3-3 longitudinal of Fig. 1; Fig. 4 is a transverse section taken on the line 4-4 of Fig. 1; Fig. 5 is a detail perspective view of the thread guiding plate and eye connector, and Fig. 6 is asimilar view of the bushing constituting the eye.

In the embodiment illustrated, a. shuttle S is shown of ordinary construction having the usual bobbin chamber 0 and a bobbin B arranged therein.

For the reception of the threading device constituting this invention, one end of the upper side of the shuttle is recessed as at 1, with an upright partition 2 arranged between said recess and the bobbin chamber, said partition having an open slot 3 extendingthroughout the width thereof from its upper edge downward, and which afiords connnunication between the recess 1 and the bobbin chamber C.

Disposed within the recess 1 adjacent the partition 2 at one side of the slot 8, is a block 4: having a threaded socket 5 for a purpose to be described. This blocks; is preferably made integral with the shuttle, although not necessarily so, and the side wall of the shuttle adjacent which the block is arranged, has an opening 6 formed therein in advance of said block, the upper edge or wall of said opening terminating substantially flush with the upper face or top of the block, the side wall of the shuttle on its inner face above said opening being un' dercut as shown at 7. The front wall of the recess 1 is straight or perpendicular for a portion of its height, said perpendicular portion terminating flush with the top of the block 4 and is then inclined outwardly and upwardly as shown at 8 for cooperation with a thread guiding plate hereinafter to be described.

The inclined portion 8 of the front wall of the recess is shown provided with a longitudinally extending groove 9 arranged substantially in alinement with the inner side of the block 45. The side walls of the inclined front portion of the recess 1 are shown converging toward their front ends and the wall of the recess opposite that having the opening 6 therein is shown perpendicular.

A fibrous pad 10 is shown disposed in the bottom of the recess 1 between the block 4: and the opposed perpendicular wall of said recess and is designed to form cushioning means for the thread T- to be described, which is designed to pass thereover and which prevents friction or wear on the thread.

As shown the opening 6 in the side wall of the recess 1 which opens through the shuttle, is substantially rectangular in form,

andl'T extending above said block.

the upper end thereof being slightly enlarged to facilitate the passage of the thread T therethrough, as will be hereinafter more fully described, but it may be of other shape if desired.

A thread delivery eye is shown in the form of a substantially rectangular bushing 11 shaped to fit within the recess 1 between the front face of the block 4 and the perpendicular front wall thereof, and which is of a length sufieient to extend from the outer face of the wall having the opening 6 therein to a point flush with the inner face of the block 4. This bushing 11 has a bore 12 extending longitudinally therethrough with a threading slot 13 opening through the upper wall thereof and extending the full length of the bushing. One wall of this slot 18 is undercut to form an overhanging lip 1% and the upper face of the bushing adjacent the opposed wall of said slot is inclined downwardly and inwardly as shown 15 to facilitate the passage of the thread T into the bore 12 which constitutes the eye he threader.

Two lugs 16 and 17 project upwardly from-the upper face of the bushing at the side of the slot having the overhanging lip, and are angular in cross sectional contour, being here shown rectangular and which are designed for cooperation with a locking and thread guiding plate-to be described.

hen the bushizw 11 is disposed in the recess in operative position, the upper face thereof at the side of the slot having the overhanging lip is arranged flush with the upper face of the block f, with the lugs 16 This bushing may be of any other desired cross sectional contour.

A combined thread guiding and bushing securing plate 18 is shown o nstructed from a single sheet of metal, the body portion of which is slightly wider than the length of the bushing 11, and is provided on its side edges with depending flanges 19 and 20 -:hich are designed to engage the opposite ends of the bushing above the bore therein for holding said bushing in operative po sition in the recess 1 when said plate is secured. This plate 18 is provided with transversely alined apertures 21 in its body portion positioned and shaped to fit over and engage the lugs 16 and 17 on the bushing 11, whereby said plate and bushing are interlockingly and detachably connected. A tongue 22 extends rearwardly from the body portion of the plate and is shaped to con form to the upper face of the block 4; and to fit over said block, being provided with an aperture 23 positioned to register with the socket 5 in the block to receive a securing screw 24, whereby the plate is locked to the shuttle and in engagement with the bushing, thereby securely connecting the plate and holding both of them in operative position. This plate 18 is provided at its front end with an upwardly inclined or deflected extension 25 which projects beyond the front end-s of the flanges 19 and 20, and the inclination of which begins at its junction with the plate opposite said front ends of the flanges. This extension has one edge thereof curved upwardly as shown at 26 to facilitate the passage thereunder of the thread T during the threading action. The opposed edge of the extension 25 is inclined inwardly and forwardly at an bushing and oblique angle as shown at 27 to adapt the plate to conform to the converging undercut side wall at the front of the recess 1, the terminal of said extension being preferably rounded to prevent the thread from being caught thereon during the threading operation. lVhen this plate 18 is secured to the block 4 by the screw24c, the deflection or upward inclination of the extension 25 will be such as to space the lower face of said extension a sufficient distance from the inclined front wall 8 of the recess to permit the free passage between them of the thread T. The upwardly curved lip 26 at the inner side of the extension forms in connection with the adjacent side wall of the recess, a thread receiving throat 28.

The bushing 11 is preferably constructed of glass, porcelain, or other similar material to avoid friction and wear during the passage of the thread T through the eye formed by said bushing, and when the parts are assembled in operative position as shown in Figs. 1 and 3, the thread T will pass freely through the eye formed by the bushing without contacting with the guiding plate after it has once entered said eye, and thus all unnecessary wear on the thread will be avoided.

In the operation of this improved threader, the parts being in the position shown in Fig. 1, in order to thread the shuttle, the free end of the thread which is wound on the bobbin B is grasped by the fingers of the operator and passed through the throat 28 around the curved free end of-the extension 25, the upturned lip 26 facilitating the passage of the thread through said throat, and on drawing the thread rearwardly after passing it around said extension, it is guided by the oblique edge 27 of the plate between it and the under-cut side wall of the recess 1, and passes over the flange 19 at the. outer side of the plate, whereby the thread is positionedconveniently for engagement by the fingers of the operator, by means of which the free end thereof is drawn outwardly, and this outward drawing of the thread causes it to pass into the eye formed by the bore 12 of the bushing, through the threading slot 13 therein. hen the thread is so disposed, the shuttle is ready for use, and it will be observed that the thread when so engaged, will pass from the bobbin through the slot 3 in the partition 2 over the fibrous mat or pad 10 in the bottom of the recess, around the inner end of the porcelain or glass bushing, and through the bore thereof to the outside of the shuttle, without in any way contacting with the metal plate forming the guide or carriage for the thread.

From the above description, it will be undertsood that both the guiding plate 18 and the eye formed by the bushing 11, will be fixed and securely held in operative position by the single element 24: and the co operative engagement of the lugs 16 and 17 with the apertures 21 in the plate, and that said plate thus performs the double function of a guide for the thread and a securing element for holding the eye in operative position, and it may be made of any suitable metal, preferably brass or copper.

I claim as my invention:

1. The combination with a shuttle having a recess in one end, an upright partition between said recess and the bobbin chamber of the shuttle, said partition having an open slot therein afiording commun1-.

cation between the recess and said bobbin chamber, a block extending upwardly from the bottom of said recess adjacent said par tition at one side of the slot therein, the side wall of said recess adjacent which said block is mounted having an opening therein in advance of said block, with its upper wall disposed flush with the top of said block, said side wall above said opening and block being under-cut, the front wall of said recess being inclined upwardly and outwardly from a point opposite the top of said block and having a longitudinal groove therein alining with the inner side of said block, a bushing fitting in sald recess in advance of said block, a thread guide plate mounted on said bushing and interlockingly engaged therewith.

2. The combination with a shuttle having a recess in one end, an upright part1- tion between said recess and the bobbin chamber of the shuttle, said partition having an open slot therein affording communication between the recess and said bobbin chamber, a block extending upwardly from the bottom of said recess adjacent said partition at one side of the slot therein, the side wall of said recess adjacent which said block is mounted having an opening therein in advance of said block with its upper wall disposed flush with the top of said block, said side wall above said opening and block being under-cut, the front wall of said recess being inclined upwardly and outwardly from a point opposite the top of said block, a bushing fitting in sald recess in advance of said block and having a bore, and a threading slot therein communicating with said bore, a thread guide plate engaged with said bushing, and means for securing the plate to the shuttle.

8. The combination with a shuttle having a recess in one end thereof communicating with the bobbin chamber of the shuttle, one side wall of said recess having an opening therein, a bushing mounted in said recess and having a bore communicating with the opening in the side wall of the recess and with the interior of said recess, said bushing having a threading slot extending through its upper face and communieating with the bore therein, a combined thread guiding and bushing securing plate disposed in said recess over said bushing and interlockingly engaged therewith, an apertured tongue extending rearwardly from said plate, a fastening element connecting said tongue to the shuttle, and a forwardly extending upwardly deflected extension at the front end of said plate having one side edge thereof curved upwardly and spaced from the adjacent wall of the recess to form a thread receiving throat, said recess having its front wall inclined upwardly and forwardly over which the inclined eX- tension of said plate is arranged and spaced to form a thread guiding passage.

4. The combination with a shuttle having a recess in one end thereof communicating with the bobbin chamber of the shuttle, one side wall of said recess having an opening therein, a bushing mounted in said recess and having'a bore communicating with the opening in the side wall of the recess and with the interior of said recess, said bushing having a threading slot extending through its upper face and communicating with the bore therein, a combined thread guiding and bushing securing plate disposed in said recess over said bushing and interlockingly engaged therewith, an apertured tongue extending rearwardly from said plate, a fastening elementconnecting said tongue to the shuttle, and a forwardly extending upwardly deflected extension at the front end of said plate having one side edge thereof curved upwardly and spaced from the adjacent wall of the recess to form a thread receiving throat, said recess having its front wall inclined upwardly and forwardly over which the inclined extension of said plate is-arranged and spaced to form a thread guiding passage, said plate having side flanges extending over the ends of said bushing above the bore therein, said flanges forming guides for the thread, and fastening means for the bushing.

5. A threading attachment for shuttles comprising a bushing with a bore extending longitudinally therethrough, one wall of said bore having a threading slot extending longitudinally through the length of the bushing, upstanding lugs on said bushing at one side of said slot, and a combined thread guide and bushing securing plate having apertures to receive said lugs and side flanges engaging the opposite ends of said bushing above the bore therein and pro vided with a forward extension curved upwardly to form a thread guide.

6. A threading attachment for shuttles comprising a bushing with a bore extending longitudinally therethrough, one wall of said here having a threading slot extending longitudinally through the length of the bushing, upstanding lugs on said bushing at one side of said slot, and a combined thread guide and bushing securing plate having apertures to receive said lugs and provided with an apertured attachingitongue extending rearwardly therefrom and with a for wardextension curved upwardly to form a thread guide, said plate having depending side flanges atthe rear of said extension engaging the opposite ends of said bushing,

the front ends of said flanges being inclined upwardly and forwardly.

7. A threading attachment for shuttles comprising an eye having a thread receiving slot therein and lateral projections thereon, a combined thread guide and eye locking plate having means at one end for connection tothe shuttle, and means at its other end for directing and guiding the thread into said eye, means arranged intermediately of its ends for interlocking engagement with the projections on said eye and lateral flanges on said plate engaging the ends of said eye whereby said plate and eye are held in connected relation.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WILLIAM J. ROBERTS. Witnesses:

MICHAEL F. CosTELLo, J osnrn T. Wrrnnnow.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. 4 Washington, D. 0; 

